From d72daa0d75e8fe71368113350254b9da2c64b235 Mon Sep 17 00:00:00 2001 From: Lothar Waßmann Date: Tue, 12 Jul 2016 15:30:02 +0200 Subject: drm: add a helper function to extract 'de-active' and 'pixelclk-active' from DT add a helper function to extract information about pixel clock and DE polarity from DT for use by of_get_drm_display_mode(). While at it, convert spaces to tabs in indentation in drm_modes.h. Signed-off-by: Lothar Waßmann Signed-off-by: Philipp Zabel --- drivers/gpu/drm/drm_modes.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'drivers/gpu/drm/drm_modes.c') diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c index fc5040ae5f25..51804e5c58b9 100644 --- a/drivers/gpu/drm/drm_modes.c +++ b/drivers/gpu/drm/drm_modes.c @@ -657,6 +657,21 @@ void drm_display_mode_to_videomode(const struct drm_display_mode *dmode, } EXPORT_SYMBOL_GPL(drm_display_mode_to_videomode); +void drm_bus_flags_from_videomode(const struct videomode *vm, u32 *bus_flags) +{ + *bus_flags = 0; + if (vm->flags & DISPLAY_FLAGS_PIXDATA_POSEDGE) + *bus_flags |= DRM_BUS_FLAG_PIXDATA_POSEDGE; + if (vm->flags & DISPLAY_FLAGS_PIXDATA_NEGEDGE) + *bus_flags |= DRM_BUS_FLAG_PIXDATA_NEGEDGE; + + if (vm->flags & DISPLAY_FLAGS_DE_LOW) + *bus_flags |= DRM_BUS_FLAG_DE_LOW; + if (vm->flags & DISPLAY_FLAGS_DE_HIGH) + *bus_flags |= DRM_BUS_FLAG_DE_HIGH; +} +EXPORT_SYMBOL_GPL(drm_bus_flags_from_videomode); + #ifdef CONFIG_OF /** * of_get_drm_display_mode - get a drm_display_mode from devicetree -- cgit v1.2.3-55-g7522